Linguist who knows only one language?  Fooey!


Programming language semantics space
 imperative
 functional
 logic programming
   constraint
   relations


 imperative factorial in C
 functional factorial in Scheme

 ancestor in Prolog



Programming language "style" space
 batch vs interactive
 bit twiddling vs safety
 GC vs core dump
 few simple powerful constructs vs zillion weak ones w/ odd restrictions
 simple syntax vs complex syntax



Scheme has a big place in the world
 historical
 breadboard for programming language implementation
 lightweight but powerful extension language
 IEEE standard, etc
 popular teaching language
   MIT, Rice, Gustavus Adolphus College,  (ML at CMU)


Nobody loves C++.  People come to *LOVE* Scheme.



How do you get to Carnegie Hall?  PRACTICE!



Programmers Environment: EMACS
 learn it!